A 38-year-old woman, gravida 2, para 2, underwent caesarean section at 41 weeks' gestation and suffered postpartum hemorrhage due to uterine atony. Four Cho sutures were used to control hemorrhage. A systematic postpartum hysteroscopy showed a heterogenous whitish area of the fundus and MRI advocated placental retention. However, hysteroscopically guided biopsies confirmed the diagnosis of partial uterine necrosis. We emphasize the need to undergo postoperative follow-up to confirm uterine wall integrity after placement of compression sutures in order to document the complications of this procedure, which remain under evaluated.